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| author | joachimschmidt557 <joachim.schmidt557@outlook.com> | 2021-01-08 22:11:49 +0100 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2021-01-10 00:41:02 -0800 |
| commit | a7da90071e23f22158ef508a263cb3a4054554dd (patch) | |
| tree | 1d9b9d1d521333aad22050ed6d014bf13cb8af3a /src | |
| parent | 29928af6005997d2b02b4c3a3576a696a02fa269 (diff) | |
| download | zig-a7da90071e23f22158ef508a263cb3a4054554dd.tar.gz zig-a7da90071e23f22158ef508a263cb3a4054554dd.zip | |
stage2: fix bug in genArg
When an argument is unused in the function body, still increment
arg_index so we still select the correct arguments in the args slice.
Diffstat (limited to 'src')
| -rw-r--r-- | src/codegen.zig | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/codegen.zig b/src/codegen.zig index dd37d3b025..eba5cb7913 100644 --- a/src/codegen.zig +++ b/src/codegen.zig @@ -1480,6 +1480,9 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type { } fn genArg(self: *Self, inst: *ir.Inst.Arg) !MCValue { + const arg_index = self.arg_index; + self.arg_index += 1; + if (FreeRegInt == u0) { return self.fail(inst.base.src, "TODO implement Register enum for {}", .{self.target.cpu.arch}); } @@ -1488,8 +1491,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type { try self.registers.ensureCapacity(self.gpa, self.registers.count() + 1); - const result = self.args[self.arg_index]; - self.arg_index += 1; + const result = self.args[arg_index]; const name_with_null = inst.name[0 .. mem.lenZ(inst.name) + 1]; switch (result) { |